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Crosslinked and crosslinkable hollow fiber membrane and method of making same utility

  • US 7,247,191 B2
  • Filed: 06/10/2005
  • Issued: 07/24/2007
  • Est. Priority Date: 12/20/2001
  • Status: Expired due to Term
First Claim
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1. A composite polymer membrane, comprising:

  • a crosslinked polyimide polymer having covalent ester crosslinks; and

    having a CO2 permeance of at least 20 GPU and a CO2/CH4 selectivity of greater than 20, at 35 degrees C. and a pressure of 100 psia.

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